Diesel prices dropped .6 cents a gallon, its 10th straight weekly decline, while gasoline rose for the first time in 10 weeks, the U.S. Department of Energy reported to NASSTRAC this week. Gasoline rose 1.8 cents to $3.538 a gallon following nine declines in which it fell 26.4 cents. The smallest of its recent declines left diesel 21.2 cents below the same week lsat year, while gasoline is 25.2 cents under a year ago. Diesel prices, which have not risen since Feb. 25, have dropped 31.4 cents in the past week, according to the DOE.